2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
13 #define tree_reader_h 1
15 #include "vp8/common/treecoder.h"
17 #include "dboolhuff.h"
19 typedef BOOL_DECODER vp8_reader;
21 #define vp8_read vp8dx_decode_bool
22 #define vp8_read_literal vp8_decode_value
23 #define vp8_read_bit( R) vp8_read( R, vp8_prob_half)
26 /* Intent of tree data structure is to make decoding trivial. */
28 static int vp8_treed_read(
29 vp8_reader *const r, /* !!! must return a 0 or 1 !!! */
31 const vp8_prob *const p
34 register vp8_tree_index i = 0;
36 while ((i = t[ i + vp8_read(r, p[i>>1])]) > 0) ;
41 #endif /* tree_reader_h */